when I get scared about something, my legs get weak and shakey and I fell down the stairs because of it last week - lol I'm usually very co-ordinated
and I can't fill up my coffee cup because I shake so much I spill it, and when I'm making it I spill coffee all over the bench because I'm shaking so much that it spills of the spoon.

So I can sympathise with the shaking and legs collapsing bit - it is not abnormal. My partner calls me a vibrator!!